79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright (C) 2013 Strahinja Val Markovic <val@markovic.io>
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#
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# This file is part of YouCompleteMe.
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#
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# YouCompleteMe is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# YouCompleteMe is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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import time
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import os
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import copy
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from ycm import utils
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from threading import Thread, Lock
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# This class implements the Bottle plugin API:
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# http://bottlepy.org/docs/dev/plugindev.html
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#
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# The idea here is to decorate every route handler automatically so that on
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# every request, we log when the request was made. Then a watchdog thread checks
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# every check_interval_seconds whether the server has been idle for a time
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# greater that the passed-in idle_shutdown_seconds. If it has, we kill the
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# server.
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#
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# We want to do this so that if something goes bonkers in Vim and the server
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# never gets killed by the client, we don't end up with lots of zombie servers.
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class WatchdogPlugin( object ):
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name = 'watchdog'
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api = 2
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def __init__( self,
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idle_shutdown_seconds,
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check_interval_seconds = 60 * 10 ):
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self._check_interval_seconds = check_interval_seconds
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self._idle_shutdown_seconds = idle_shutdown_seconds
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self._last_request_time = time.time()
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self._last_request_time_lock = Lock()
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if idle_shutdown_seconds <= 0:
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return
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self._watchdog_thread = Thread( target = self._WatchdogMain )
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self._watchdog_thread.daemon = True
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self._watchdog_thread.start()
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def _GetLastRequestTime( self ):
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with self._last_request_time_lock:
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return copy.deepcopy( self._last_request_time )
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def _SetLastRequestTime( self, new_value ):
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with self._last_request_time_lock:
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self._last_request_time = new_value
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def _WatchdogMain( self ):
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while True:
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time.sleep( self._check_interval_seconds )
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if time.time() - self._GetLastRequestTime() > self._idle_shutdown_seconds:
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utils.TerminateProcess( os.getpid() )
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def __call__( self, callback ):
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def wrapper( *args, **kwargs ):
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self._SetLastRequestTime( time.time() )
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return callback( *args, **kwargs )
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return wrapper
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